Guanine synthesis-related gene expression enrichment in iridophores.

RPKM values for enzymes related to guanine synthesis in iridophores. Enzymes are grouped with their commonly associated pathways. Rate-limiting enzymes from each of the specific pathways are indicated with an asterisk. Notably, adssl is the first adenine-specific gene in purine synthesis, and is not upregulated in iridophores.